Infineon Technologies CY90F543GPFR-GE1

Overview

CY90F543GPFR-GE1 from Cypress Semiconductor is a 16-bit F2MC-16LX microcontroller with dual FULL-CAN interfaces (CAN 2.0A/B), 128 KB Flash ROM, 6 KB RAM, and 81 general-purpose I/O ports. It operates at up to 16 MHz system clock (via on-chip PLL ×4), achieves 62.5 ns minimum instruction execution time, and targets automotive body control modules requiring CAN-based distributed networking and real-time sensor/actuator management.

For engineers reviewing the CY90F543GPFR-GE1 datasheet, CY90F543GPFR-GE1 pinout, CY90F543GPFR-GE1 application, or CY90F543GPFR-GE1 equivalent, key selection criteria include dual-CAN timing compliance, Flash reprogrammability in-circuit, 8/10-bit A/D conversion with 26.3 µs per channel, and support for external bus expansion up to 16 Mbytes.

Technical Context

The CY90F543GPFR-GE1 implements the F2MC-16LX CPU core with 23 addressing modes, 32-bit accumulator for extended precision arithmetic, and enhanced C-language support via system stack pointer and barrel shift instructions. Its interrupt subsystem delivers 8 priority levels and 34 interrupt sources including dedicated CAN message buffers and EI2OS-triggered service requests.

Dual FULL-CAN controllers each support 16 configurable message buffers with mixed mailbox/FIFO allocation, automatic retransmission, remote frame response, and acceptance filtering using full-bit compare, full-bit mask, or two partial bit masks - enabling deterministic message handling at up to 1 Mbps data rate.

Key Specifications

Pinout & Package

LQFP-100 package with 0.5 mm lead pitch, 14 mm × 14 mm body, and exposed thermal pad (non-electrical). Pin functions validated per Cypress Document 002-07696 Rev. *B.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit automotive microcontroller applications.

Compared with XC2267M-104F100L and RL78/F13, CY90F543GPFR-GE1 uniquely balances dual CAN 2.0B, 81 I/O, Flash reprogrammability, and automotive temperature range in a single LQFP-100 package - making it optimal for cost-sensitive, thermally demanding body electronics with legacy CAN infrastructure.

Availability

CY90F543GPFR-GE1 is available at Aetrix Electronics and suitable for automotive body control units, industrial CAN gateways, and off-road equipment monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY90F543GPFR-GE1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability microcontrollers and programmable systems-on-chip for automotive, industrial, and IoT applications.

The MB90540G/545G series was engineered specifically for automotive body electronics needing dual CAN 2.0B, Flash-based field-upgradable firmware, and robust analog/mixed-signal integration - targeting ASIL-A functional safety compliance without external co-processors.

FAQ

Does CY90F543GPFR-GE1 support CAN FD?

No. The CY90F543GPFR-GE1 implements FULL-CAN compliant with ISO 11898-1:2003 (CAN 2.0A/B), supporting data rates up to 1 Mbps with standard and extended identifiers. It does not support CAN FD's flexible data-rate or extended payload features. For CAN FD, consider Infineon's AURIX TC3xx family.

What is the maximum operating frequency and how is it achieved?

The CY90F543GPFR-GE1 achieves a maximum system clock of 16 MHz using its on-chip PLL configured for ×4 multiplication of a 4 MHz external crystal (X0A/X1A). Minimum instruction execution time is 62.5 ns at this clock speed and VCC = 5.0 V. The PLL also supports ×1, ×2, ×3, and ÷2 modes for dynamic power/performance tuning.

How many A/D input channels does it have and what resolution options are supported?

The CY90F543GPFR-GE1 integrates an 8-channel successive-approximation A/D converter with selectable 8-bit or 10-bit resolution per conversion. Input channels map to pins P60/AN0 through P67/AN7. Conversion time is fixed at 26.3 µs per channel, and triggering can be performed via software, timer match, or external signal on ADTG (P55).

Is external bus interface supported and what data widths are available?

Yes. The CY90F543GPFR-GE1 supports an external bus interface with configurable 8-bit or 16-bit data bus width, enabling connection to external SRAM, Flash, or peripherals. Address space spans up to 16 Mbytes (24-bit addressing), controlled via ALE, RD, WR, HRQ/HAK, and RDY signals on port P20–P27 and control pins.